Why did the Yang family generals not protect their family and country when NorthernSong Dynasty fell

Why did the Yang family generals not protect their family and country when NorthernSong Dynasty fell

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Yang Yanzhao
1 Video View·Jul 25, 2024  #YangYanzhao #YangYanlang #SongDynasty

#YangYanzhao #YangYanlang #SongDynasty